Mining overburden rock isolating, grouting and filling simulation experimental device and method

Abstract

The invention discloses a mining overburden rock isolating, grouting and filling simulation experimental device which comprises a slurry storage tank, a simulation test bed and a wastewater pool, wherein a stirring rod is arranged in the slurry storage tank; the stirring rod is connected with a motor; a water suction pipe is arranged on the slurry storage tank; the water suction pipe is connected with a grouting pump; a grouting and filling bag is arranged in the simulation test bed; a slurry conveying pipe and a filter pipe are arranged on the upper part of the grouting and filling bag; the slurry conveying pipe is connected with the grouting pump; and the wastewater pool is connected with the filter pipe in the simulation test bed. A mining overburden rock isolating, grouting and filling method is researched in a laboratory by utilizing the simulation experimental device, an observation device and method which are low in cost, short in test cycle, convenient and intuitive in observation, high in repeatability and high in similarity are provided, and an effective means is provided for researching the technical principle of mining overburden rock isolating, grouting and filling non-village relocation coal extraction and optimizing the process parameters.

Description

technical field [0001] The invention relates to a simulation experiment device and method of a filling coal mining method, in particular to a simulation experiment device and method of mining overburden rock isolation grouting filling simulation. technical background [0002] The problem of coal pressing under buildings is extremely prominent in coal mines in my country, and filling coal mining is an effective way to solve this problem. At present, a variety of filling coal mining methods have been developed in China, and remarkable results have been achieved in solving the problem of building coal mining. For example, patent 201210164929.9 discloses a coal mining method of isolated grouting and backfilling in mining overlying strata, which overcomes the deficiencies in the existing backfill technology, and provides a simple method, high coal recovery rate, and little interference between backfill and coal mining. , low filling cost, and good effect of subsidence control mi...

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Problems solved by technology

[0003] Purpose of the invention: The present invention aims at the problems of long on-site measurement and research period, high research cost, poor repeatability, and inconvenient observation and research of the internal changes of the overlying rock and the grouting filling situation of the overlying rock isolation and grouting filling coal mining method. , providing an experimental device for mining overlying rock isolation grouting filling coal mining, and a method for using the experimental device to conduct simulation experiments

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